Hydraulic swivel.



E R. DEGREE.

HYDRAULIC SWI EL. APPLICATION FILED FEB.11,1911.

' Patented Jan. 2 1915.

UNITED STATES Pilgrim OFFICE.

um: i. nic'xnn, or no'usron, runs.

hinmuudmvmn lpecllcatlon of Letter! 2mm.

Patented Jan. 26, 1915.

npplication nlcd Iebruary 11, 1811. Serial No. 607,983.

improvements in hydraulic swivels, and.

more particularly to that character of swivels desi ned for use in connection with to terywe l drilling machines, where water is conducted under pressure from aump to the point of a drill secured upon the lower end of a rotating drill stem.

The object of the invention is to provide a device of the character described having a stationary part, and a rotatable part, the

latter being rotatable relative to the former and carrying a drill stem suspended therefrom, it being the primeobject to an. port a supply hose in a given position a retain the some against movement in relation to the rotating drill stem while supplying it with water. The cooperating pdrts suitable packing therebetween to prevent escape of oil mm. or the introduction of water to the internal mechanism of the swivel.

With the above and other objects in view my inventionhas particular relation to cerin novel features of construction, operation and arrangement of parts, an example 11 pi which is given int-his specification and illustrated in the accompanying drawing, re is e sectional side elevation of the swivel.

Referring now In re articular-1y to the drawing, thenumeru 1 esignates a hollow trunhion block which is supported by the hailv 2, which is secured on the projecting reduced endsof the trunnion block. This bail is attached to any preferred tackle car- "ried by 11. v suitable derrick and. the swivel thus suspended in the desired position. The trunnion block 1, has an upstanding rim or casing 3, integral therewith, upon which-a cap 4 is screwed, thus forming an inclosed chamber in which the operative mechanism oi, the swivel is incased- The numeral 5 refers to neck, which is secured-on cap 4 by means of set bolts 6,

and to which any preferred formof supply house my be attached, the hope being de' signed to conduct the water, under pressure from a suitable force pump. (not shown) to neckfi and thence to the drill stem.

The numeral 8 refers to a stationary hose stem, whose upper end is screwed into the lower end of neck 5 and which extends through cap 4, trunnion 1 and is designed to conduct the water from neck 5 and dis charge the same into a drill stem (not shown) which the swivel is designed to support.

Mounted within and resting upon the lower surface of the trunnion block 1 is an annular collar 9 formed with a race way ring 10 to receive the anti-friction beerin 11.

v e numeral 1). refers to a similar collar formed with" a race way ring 13 to receive and seat on bearings 11, which maintain a space between said collars. The collar 12 is screwed on to the upper end of the swivel stem 14 and secured thereon by means of lock nut 15 which is screwed on to the upper-extremity of said swivclstem and rests against said collar 12. The under face of cap 4 and thenpper face of lock nut 15 are provided with coinciding bearing-receiving grooves, which receive the bearings 16 whic minimize the friction between said cap and nut.

' The swivel stem 14 surrounds the hose stem 8, closely and in operation revolves about the some and extends up into the chamber of the trunnion block and through rim 9 and carries at its upper end ring 12 amflock nut 15, heretofore described, thus forming the rotatable port of the swivel. The lowerend of the ewivel stem 14 is exteriorly threaded and a. casing-bushing 1'7 fitted to the same. A jam collar 18 is also threaded upon it for firmly locking the two and obviating danger of said bushing workwhlch are screwed inithe ends of the swivel A- collar21 surrounds stem 14 just below 1012. which i ii- This push 23 which surr securerl in. poor, threaded. over the collor rests agm st the lower end of suirl gland This packing ectually prevents the of tho lubricating flnirl from the el ,ml'iel." the trunnion block 1. The numeral 2 to a packing which interposed between We lower enrlof bushin Hand the hose S and which is seemed in position by menus; o

gland which surrounds mid hose stem and screwed into their: end of said.

bushing and rests against said 12 r This pouring is clesi to prevenl: the eecape of Water through. liuet'wl'aen amid hose stem and bushing but in case my mama: should so escape the some tinny be diselmrgmfl throu'gl'l the perforation 27 provided in silirl bushing for the esoapemeot thereof, 4

"llhemrions jointsnniting the memhere of the rotatable part, as well as those connect ing said port to the drill stem and the joint connecting the hose stem to the neck .5 or, screw oonneetions, the threads of these C O fl" nections having a pitch whiol'l will (351115.18 lzl'm rotation of the drill stem to tighten rather than loosen said joints.

In drilling through soft stratum the d l stem is 91:: ended from the swivel out], the; rotatable purl; of the swivel rotates on hr ings 11 but when rock or other howl Stlihi nifl'i is encountereril, the drill stem may ho on tiroly supported from beneath i stratum, in which case tho hearings be brought into play and A nine the friction between a; o onp emf. the rotatable port of the swivel In opermjion the bail 2., being sl'qiaporteal by my preferred tackle carried by a suitable derrick, supports the elemenls onrrieo'. by the trunnion block, and the swiv a: is hrow m ino line with the section of the drill and the lower end of the swivel stem 14 or connected to the drill stem 7 thramgh t' r casing-bushing 17.- The water may now forcedv through neck 5 anti it will find way down throilgh the hr stem 8 the drill stem from which it messes Lr holes for the purpose formed in the drill. point that is screwed to the bottom 42ml of the drill stem or casing, the said stem being given a rotary motion in}? any of the Well known means. said means not being olmwn in the drawing. During oporation. the swivel stem 14 r'llar 12, look not 15 and bushing 17 will rotate with the drill stem, to which the parts are connected. The col-- lar 9, limil 7 trunnion block 1, cap 4 and the neck 5 am. e hose stem connected thereto 1] will remain stationary.

It will be apparent that the cooperating 1r end. of wil onrorl on lost moo ti-en.

standing rod in rollers, solid :mtif hoot, a me t o In Within. Nil :1 i" v role table rein ti an extends throng-:11 soil. um)

i of mini 1 nnnon l 4: a TKHQJ; lmrmnfnh I (lT ul-he. W mrronmiing hose stem.

A lrvdranlio on m noel-Minn; tron "W nion bloe' u supporting Mil 'th' upstanding onnulor rim norriml block and intemrnl fiherowlfl :1, rwivel elem whose upper owl entrain on into our] m minutes abhin the block. r mirronncl {1 sold swivel storm emd "no upon Mn; mp r in of soul tronnion own :1 rrcllnr' oollor s'nmml above ifl'ie fl in]? anal, scoured to the V swivel atom, a l ""l: not smnrefii on will. swivel sierra and lo inn; the ins wnliionvr'i collar thereon, miti friotion tr inter posed between said oollnrsn or mm L UQi l to the upper edge of said UTWiMl EllUQ rim and entirely inclosing said. (.fllliiTF, said an friction means, said look not zmrl the: upne'r end of said swivel stem, :1 noel: rlrtnnlmhly secured to said mm, untifrietion. nn'rms imposed between said mm and look: not :unl

a hose within said ewivel V em and in" I dependently rotatable relative thereto, whose upper'end extends through'said cap and is secured to the lower end of said neck.

3. A'hydraulio swivel including a trunnion block, a supporting bail thereforg'an upstanding annular rim. carried by said block, a swivel stem extending up into the block and whose upper end terminates within the same, a collar surrounding said swivel stem and resting upon the upper side of said trunnion block, a similar collar-spaced above the first mentioned collar and surrounding the upper end of the swivel stem, a lock nut secured on said swivel stem'and locking the last mentioned collar thereon, antifriction bearings interposed between said collars, a cap secured to the upper edge of said upstanding rim and entirely inclosing said col- ,lars, said antifriction means andsaid locknut, a neck secured to said cap, a hose stem within said swivel stem and independently rotatable relative thereto, whose upper end extends through said cap and is secured to the lower end of said neck, suitable packing interposed between the hose stem and one end of the swivel stem, suitable packing interposed between the trunnion block and.

swivel stem and arranged beneath said collars, and a bushing carried by the lower end-of said swivel stem and surrounding the lower extremity of the hose stem.

4. A hydraulic swivel including a trunnion block, a supporting bail therefor, an

upstanding annular rim carried by said block, a swivel stem whose upper end extends up into and terminates within the block, a collar surrounding said swivel stem and resting upon the upper side of said trunnion block, a similar collar spaced above the first mentioned collar and surrounding the upper end of the swivel stem, a lock nut' secured on said swivel stem and locking the last mentioned collar thereon, antifriction means interposed between said collars, a cap secured to the upper edge of said upstanding rim and entirely inclosing said collars, said antifriction means, said lock nut and the upper end of said swivel stem, a neck detachably secured to said cap, antifriction means interposed between said cap and lock nut and a hose stem within said swivel stem and independently rotatable relative thereto, whose upper end extends through said cap and is secured to the lower end of said neck.

In testimony whereof I hate signed my name to this specification in the presence of two subscribing witnesses.

HARRY R. DECKER. Witnesses:

' A.ToMPK1Ns,

, WILL C. Gnrossr. 

